Latch



March 4, 1952 v. .1. AcuAzzo LATCH Filed Se t. 7. 1949 lllll INVENTOR. W70 J. ACUAZZO Patented Mar. 4, 1952 UNITED STATES PATENT OFFICE 4 Claims.

amended April 39, 1928; 370 0. G. 757) This invention relates to improvements in locking devices, and more particularly pertains to improvements in three-point latching devices. This application is a continuation-in-part of abandoned application Serial No. 793,176, filed December ,22, 1947, by applicant for an improvement in latches.

The primary object of this invention is to provide a three-point latching .device of simple and durable construction that can be manufactured and installed economically and facilely.

Another object is to provide a three-point latching device constructed of a minimum number of simple elements that can be fabricated from sheet stock and assembled quickly and facilely.

Still another object is to provide a three-point latching device adapted for use on left-hand or right-hand installations.

A further object is to provide a three-point latching device wherein spot welding of fabricated parts is not required, and construction can be performed conveniently without the employment of special dies and equipment.

" Further objects and advantages of this invention, as well as its construction, arrangement and operation will be apparent from the following description and claims in connection with the accompanying drawing, in which the single figure is an isometric view of a three-point latching device mounted on a door, showing a preferred embodiment of the invention.

2 correspondingly disposed slot in sill l3, said rod being slidable in said slots.

Plate 41 is carried rotatably on shaft 2'! between plate 29 and door l9. Said plate 41 is provided with a first lip 49 disposed at a corner thereof, said lip extending at an angle to a face of said plate, and said plate is provided with a second lip 5|, disposed at an adjacent corner thereof, said second lip extending similarly be- Closet II is provided with a doorframe including sill 13, head l5 and jambs I1, and a door l9 having lower rail 2|, upper rail 23 and stiles 25 nesting therebetween. Door 9 is hinged suitably to one of the jambs, said jamb not being shown in the figure.

Operating shaft 21, carried rotatably in door l9 and extending therethrough to a suitable handle (not shown), is secured to plate 29 with the inner end of said shaft flush with the inner face of plate 29. Said plate 29 is adapted to extend beyond notch 3| in stile 25 into a correspondingly disposed notch 33 of jamb I! to 1 provide a latch tongue.

Rod 35 is secured rotatably toplate 29 proximate the end of said plate distal the tongue portion thereof by rivet 31. Said rod extends through a slot in upper rail 23 and a correspondingly disposed slot 39 in head |5, said rod being slidyond said face of said plate. Lips 49 and 5| are adapted to limit rotation of p ate 29 in the manner hereinafter described.

Plate 41 is further provided with a punched hole 53 adapted to be mounted rotatably on shaft 27, whereby plate 41 can be mounted in transposed position for use on a door hinged oppositely to that shown.

In operation, when shaft 21 is rotated in a clockwise direction, as shown in the drawing, the

tongue of plate 29 is rotated clockwise and re-' tracted from notch 33 of jamb ro d 4| is retracted from the slot of sill l3, and rod 35 is retracted from slot 39 of head l5, simultaneously. Such retraction is limited by rod 4| and by lips i 49 and 5|, as the bottom edge of plate 29 abuts lip 5|, which abuts rod 4| when moved clockwise, and the top edge of plate 29 abuts lip 49. Further rotation of plate 29 is thus prevented.

It is apparent that transposition of plate 41 so that said plate is carried rotatably on shaft 2! by means of punched hole 53 and so that lip 49 is below and lip 5| is above plate 29, adapts the device for use on a door hinged to the jamb ll shown in the drawing.

Obviously many modifications and variations of the present invention are possible in the light of the above teachings. Therefore, within the scope of the appended claims the invention can be.practiced otherwise than as specifically described.

The invention described herein may be manufactured and used by or for the Government of the United Statesof America for govermnental purposes without the payment of any royalties thereon or therefor.

I claim:

1. A latching device comprising a shaft adapted to be mounted rotatably in a door, a latching tongue carried on said shaft and rotatable thereby into mating notches in a stile and jamb of such door, a first rod carried rotatably on said tongue between said shaft and the notch-engaging portion of said tongue, said rod being extensible into mating slots, in the sill and lower rail 55 of such door by rotation of said tongue, a second rod carried rotatably on said tongue between said shaft and the end of said tongue distal the notch-engaging portion thereof, said second rod being extensible into mating slots in the head and upper rail of such door by rotation of said tongue, and a plate mounted rotatably on said shaft between said tongue and said door, said plate having upstanding lips adapted to limit rotation of said tongue.

2. A latching device comprising a shaft adapted to be mounted rotatably in a door, a latching tongue carried on said shaft and rotatable thereby into mating notches in a stile and jamb of such door, a first rod carried rotatably on said tongue between said shaft and the notch-engaging portion of said tongue, said rod being extensible into mating slots in the sill and lower rail of such door by rotation of said tongue, a second rod carried rotatably on said tongue between said shaft and the end of said tongue distal the notch-engaging portion thereof, said second rod being extensible into mating slots in the head and upper rail of such door by rotation of said tongue, and a plate mounted rotatably on said shaft between said tongue and said door, said plate havin a pair of upstanding lips extending from. an edge thereof, said lips being adapted to limit rotation of said tongue.

3. A latching device comprising a shaft adapted to be mounted rotatably in a door, a latching tongue carried on said shaft and rotatable thereby into mating notches in a stile and jamb of such door, a first rod carried rotatably on said tongue between said shaft and the notch-engaging portion of said tongue, said rod being extensible into mating slots in the sill and lower rail of such door by rotation of said tongue, a second rod carried rotatably on said tongue distal the notch-engaging portion thereof, said second rod being extensible into mating slots in the head and upper rail of such door by rotation of said tongue, and a plate mounted rotatably on said shaft between said tongue and said door, said platehaving a pair of upstanding lips extending fromadjacent corners thereof, said lips being adapted to limit rotation of said tongue.

4. A latching device comprising a shaft adapted to be mounted rotatably in a door, a latching tongue carried on said shaft and rotatable thereby into mating notches in a stile and jamb of such door, a first rod carried rotatably on said tongue between said shaft and the notch-engaging portion of said tongue, said rod being extensible into mating slots in the sill and lower rail of such door by rotation of said tongue, a second rod carried rotatably on said tongue between said shaft and the end of said tongue distal the notchengaging portion thereof, said second rod being extensible into mating slots in the head and upper rail of such door by rotation of said tongue, and a plate mounted rotatably and non-symmetrically on said shaft between said tongue and said door, said plate having upstanding lips adapted to limit rotation of said tongue.

VITO J. ACUAZZO.

No references cited. 

